QI 125.4
4-channel fixed installation amplifier
- Compact half-rack amplifier for installations
- Four-channel Lo-Z and Hi-Z flexibility
- Automatic power sharing for dynamic loads
- Internal presets for QUAD Industrial loudspeakers
- Easy mounting in tight spaces
- Full control via QI CORE software
PRODUCT SERIES
4-channel amplifier
- 4 Lo-Z / 2 Hi-Z
- Ultra-low distortion
- Built in protection circuits
- Optional racks available
ZC-1
Seamless integration
- Discreet wall controller powered via PoE
- Integrates with all QUAD Industrial networked amplifiers
- Set multi-zone levels and priority inputs







QI CORE
INtuitive control software
- Designed with installers in mind
- Built-in loudspeaker presets
- Adjust output routing along with delay and EQ
| Name | Type | Size | File |
|---|---|---|---|
| QI Speaker Preset Library | Preset Library | 29 KB | Download |
| QI 125.4 User Manual | User Manual | 3.5 mb | Download |
| QI 125.4 Quick Start Guide | Quick Start Guide | 0.2 mb | Download |